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Finding the Fourth Proportional to 157,683.53, 217,601.71 and 86,062.93

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Solution

The fourth proportional to 157,683.53, 217,601.71 and 86,062.93 is: 118,765.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,683.53 : 217,601.71 = 86,062.93 : x
  2. Step 2: Convert to fraction form
    157,683.53/217,601.71 = 86,062.93/x
  3. Step 3: Cross multiply
    157,683.53x = 217,601.71 × 86,062.93
  4. Step 4: Simplify right side
    157,683.53x = 18,727,439,976.45
  5. Step 5: Solve for x
    x = 18,727,439,976.45/157,683.53
  6. Step 6: Final answer
    x = 118,765.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.